Rotational Compressor Valve

Group 18:Alejandro Castro

Sam LeutholdAndrew Borger

GE Sponsor: Todd HopwoodFaculty Advisor: Dr. Van Sciver

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OverviewApplicationProblem StatementProject ScopeFinal Design(Initial)Problems EncounteredFinal DesignCurrent ProgressTestingPotential IssuesModified Future ScopeSummary

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Application

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Current Valves

Valve Stop

Valve Shutter

Valve Seat

Valve Springs

Plate Valves Poppet Valves

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Problem StatementReciprocating compressors move large

volumes of natural gas Current compressor valves are reliable but

inefficientInefficiencies caused from indirect flow pathProject Goal: Obtain direct flow with a

rotational type valve

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Project ScopeMust operate in a rotational manner and

obtain direct flowOperate at pressures between 30 psi and 600

psiMaterials must be able to withstand

temperatures approaching 350FModifiable to fit all current gas compressors

used by G.E.Is to be easily replaced$2000 budget

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Final Design(initial)

Gas Flow

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Problems Encountered Machining of the threads on the outer

housing would have been overly complicated A separate threaded insert needed to be

designed Thickness of back plate needed to be

minimized to be easily milledPrototype materials have been changed from

production materials due to cost

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Final Design(Modified)

Gas Flow

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Current Progress(update)Final design changes have been made for

ease of machiningValve machining in progressMaterials for test rig in process of being

ordered: $438.43Materials for flow visualization have been

ordered: $243.67

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Test Rig

≈ 50 psi

≈ 50 psi

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Test Rig

≈ 50 psi

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Wind-Tunnel Smoke Wire TestA simplified acrylic model will allow flow

visualization through entire valve

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Potential IssuesValve does not completely openTest conditions are not the same as operating

conditionsThread and/or pin binding Machining tolerances

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Future ScopeMachining in progressParts for test rig being orderedTesting will follow for the remainder of the semesterDuring testing valve performance will be optimizedCollaboration with team 19 not likely

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Summary3-D prototype already implementedDesign slightly changed for machining

purposes Machining in progressParts for test rig currently being orderedTotal Budget: $2000Total spent: $879.86 Project is running slightly behind accepted

schedule due to machining difficulties

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Questions

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Bill of Materials

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Original Test Rig Design

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Calculations